VI Filter Cartridge: Height: 80mm, Outer Diameter: 106mm, Inner Diameter: 52mm. Suitable for Lay-Z-Spa series hot tubs - Please confirm the pump model before purchasing. Removes Impurities: The massage pool filter is made of easy-to-clean and durable Dacron paper, dirt can be easily washed off. And this filter is difficult to cultivate bacteria and thus avoids secondary contamination. High Quality Pool Filter: Made of polypropylene with high tensile strength. The filter medium, center rod, and end cover are glued together to ensure a better seal of the end cover. The opening is injection molded, with high strength, thick filter membrane, and greater absorption capacity. Easy to Clean: Simply remove the filter from the pump and rinse off the dirt with a garden hose. Be careful not to clean roughly or use a high-pressure water jet, as this may damage the filter paper. Maintaining Efficiency: Easy to install and the cartridges can be easily cleaned and reused thanks to their high-quality